On 4/30/15 9:52 AM, Vinod Koul wrote:
Some Intel HDA controllers sport a DSP. These systems can also be enabled with ASoC HDA driver as well. So add a flag in hda-core to enable/disable aDSP This flag for now is false, and should be true once the ASoC based systems mature. The integrators/OS vendors can configure this flag based on system preference.
This choice is contingent on the BIOS options, you can't enable the DSP if the BIOS said no DSP...
Signed-off-by: Vinod Koul vinod.koul@intel.com
include/sound/hdaudio.h | 11 +++++++++++ sound/hda/hda_bus_type.c | 4 ++++ 2 files changed, 15 insertions(+)
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h index b97c59eab7ab..015bec1079f9 100644 --- a/include/sound/hdaudio.h +++ b/include/sound/hdaudio.h @@ -12,6 +12,17 @@ #include <sound/memalloc.h> #include <sound/hda_verbs.h>
+/*
- hdac_adsp_enable: exported HD-A aDSP enable configuration.
- Some Intel HDA controllers sport a DSP, for these platform we can bypass
- aDSP and use as regular HDA controller or enable aDSP and use aDSP
- along with I2S codecs etc.
- hdac_adsp_enable would enable the aDSP based HDA controller if the
- platform supports it
- */
+extern bool hdac_adsp_enable;
- /* codec node id */ typedef u16 hda_nid_t;
diff --git a/sound/hda/hda_bus_type.c b/sound/hda/hda_bus_type.c index 519914a12e8a..80e0570ffbf4 100644 --- a/sound/hda/hda_bus_type.c +++ b/sound/hda/hda_bus_type.c @@ -10,6 +10,10 @@ MODULE_DESCRIPTION("HD-audio bus"); MODULE_LICENSE("GPL");
+bool hdac_adsp_enable = false; +module_param(hdac_adsp_enable, bool, 0444); +MODULE_PARM_DESC(hdac_adsp_enable, "Enable aDSP on Intel HDA based systems");
- static int hda_bus_match(struct device *dev, struct device_driver *drv) { struct hdac_device *hdev = dev_to_hdac_dev(dev);